Frequency:
Semimonthly, Jan. 2002- ;
Monthly, Jul. 1963-Dec. 2001;
Bimonthly, 1961-May 1963;
Monthly, 1957-1960.
Mergers:
Absorbed: Shi kan (Xiao yuan ban) in 2004.
Note:
Publication suspended 1965-1975.
Note:
Ceased in print publication with v. 29 (2007).